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Finding the Fourth Proportional to 186,687.75, 257,648.54 and 115,065.93

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Solution

The fourth proportional to 186,687.75, 257,648.54 and 115,065.93 is: 158,802.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,687.75 : 257,648.54 = 115,065.93 : x
  2. Step 2: Convert to fraction form
    186,687.75/257,648.54 = 115,065.93/x
  3. Step 3: Cross multiply
    186,687.75x = 257,648.54 × 115,065.93
  4. Step 4: Simplify right side
    186,687.75x = 29,646,568,292.91
  5. Step 5: Solve for x
    x = 29,646,568,292.91/186,687.75
  6. Step 6: Final answer
    x = 158,802.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.